Locomotive head and signal light.



D. BURNFIELD.

LOUOMOTIVE HEAD AND SIGNAL LIGHT.

APPLICATION FILED JANA, 1908.

903,355. Pat ented'Noir. 10,1908.

2 SHEETS-SHEET 1.

D. BURNFIBLD.

LOOOMOTIVE HEAD AND SIGNAL LIGHT.

APPLICATION FILED JAN. 4, 1908.

903,355. Patented Nov. 10, 1908.

2 sums-sum 2. 1

I mmwtoz DAVID BURNFIELD, OFDENVER, COLORADO.

LOCOMOTIVE HEAD AND SIGNAL LIGHT.

Specification of Letters Patent.

Patented Nov. 10, 1908 Application filed January 4:, 1908. Serial No. 409,305.

To all whom it may concern:

Be it known that I, DAVID BURNFIELD, a citizen of the United States, residing in the city and county of Denver and State of Colorado, have invented certain new and useful Improvements in Locomotive Head and Signal Lights; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawlngs, and to the letters and figures of reference marked thereon, which form a part of this specification.

My invention relates to improvements in locomotive head and signal lights, in which the main casing of the headlight is provided with auxiliary casings located on opposite sides of the main casing and communicating therewith as disclosed in my previous patent No. 823392, dated June 12th, 1906. In my present construction I employ reflecting tubes leading from the main reflector into the said casings, whereby a portion of the light reflected from the main headlight, passes through these tubes, and thence through lenses with which the auxiliary casings are provided.

An important feature of my improved construction, consists of an auxiliary lamp mounted in each auxiliary casing and adapted for use in case the main headlight is extinguished. Under normal conditions and when the main headlight is in use, these auxiliary lights are not employed and are located in the rear of the outer extremities of the reflecting tubes which are provided with slidable members which may be moved inwardly to allow the rays of light from the auxiliary lamps, to pass through the lenses of the side casings. Vhen the auxiliary lights are not employed, the said members are moved outwardly and occupy positions in front of the auxiliary lamps as just explained.

In each auxiliary casing a curved slide is movably mounted, the said slide having a colored glass which when passed in front of the lens of the auxiliary casing, changes the color of the signal light. In each casing I also place what I term a shutter slide adapted to be moved in front of the lens of the auxiliary casing whereby the rays of light are entirely out oif from the lens of the auxiliary casing.

Having briefly outlined my improved construction, I will proceed to describe the same in detail reference being made to the accompanying drawing in which is illustrated an embodiment thereof.

I11 this drawing, Figure 1 is a horizontal section taken through my improved head and signal light mechanism. Fig. 2 is a front elevation of the same. Fig. 3 is a view similar to Fig. 1, but showing the movable parts of the reflecting tubes moved inwardly as is required when the auxiliary lights are employed. Fig. 4 is a section taken on the line l4 Fig. 5, the parts being shown on a larger scale. -Fig. 5 is an underneath view of one of the auxiliary casings shown on the same scale as in Figs. 1 and 3. Fig. 6 is a view of the structure looking in the direction of arrow 6 Fig. 3. Fig. 7 is a perspective view in detail of the slide carrying the colored glass. Fig. 8 is a similar view of the shutter slide.

The same reference characters indicate the same parts in all the views.

Let the numeral 5 designate the main headlight casing; 6 the lens and 7 the reflector located in the rear of the lens. The main headlight is located in the rear of the lens 6 and in a suitable position with reference to the reflector in order to give the desired results. In the drawing (see Fig. 2) I have illustrated an electric arc lamp, 8 and 9 being the electrodes.

Attached to each side of the main casing 5, is an auxiliary casing 6 whose vertical walls are curved and slotted as shown at 10. In each of these vertical walls is formed an opening 12 covered by a lens 13. Movably mounted within each auxiliary casing is a curved slide 14 to which is attached a screw 15 which protrudes through the slot 10 and to its protruding portion is applied a thumb nut 16 whereby the slide may be locked in any desired position of adjustment. This slide contains a disk 17 of colored glass. When the slide is adjusted to bring this disk in front of the lens 13, the color of the light is changed for signal purposes. Also movably mounted within each auxiliary casing, is a curved slide 18 which may be termed a shutter since when properly adjusted it cuts ofl the light entirely from the lens 13. This slide is provided with a depending screw or threaded stem A, which protrudes through a slot B formed in the bottom of the auxiliary casing. To the screw A is applied a thumb nut C adapted to secure the slide'in any position of adjustment. The slot B is of suflicient length to permit the necessary movement of the shutter slide.

From each side of the reflector 7, projects a reflecting tube 19, the said tube being directed toward the lens 13 whereby a portion of the rays of light from the main headlight, pass through each tube and thence through the lens 13. Each of these tubes is provided with a part 20 slidably mounted thereon by means of a rivet 21 connected with the part 20 and passing through a slot 22 formed in the tube. Each part 20 is provided with a pin or knob 23 which may be grasped for purposes of adjustment. When the main headlight is employed to supply the rays for the lenses 13, the extensions 20 of the reflecting tubes are moved outwardly (see Fig. 1).

V In the bottom of each casing is formed an opening 24L, surrounded by a depending exteriorly threaded sleeve 25 whose upper edge is secured to the bottom of the auxiliary casing. Attached to the upper surface of the bottom of the casing are two springs 26 which are angle-shaped, their upper portions projecting above the opening 2 1 and adapted to engage the upper part of the body 27 of a lamp 28, this body portion of the lamp being passed upwardly through the opening 24 so that the rays therefrom are entirely within the auxiliary casing. The lamp is held in place by a screw cap 29 upon the horizontal portion of which the lamp rests. This cap is provided with an interiorly threaded flange adapted to screw upon the exteriorly threaded sleeve 25. By the time the cap is screwed to position, the upper part of the body of the lamp is pressed against the springs 26 with suflicient force to hold the lamp securely in place. The body of the lamp projects downwardly through the opening 24 in the bottom of the casing whereby about half of its height is below the said bottom, the screw cap and sleeve thus forming a socket or receptacle for the lamp. In case the main headlight is extinguished, the auxiliary lamp 28 is lighted. In this event each movable part 20 is slid inwardly upon its reflecting tube, to the position shown in Fig. 6, thus removing all obstruction to the passage of the rays of light from the auxiliary lamp, through the lens 13. In this case the forward portion of each reflecting tube aids in reflecting the rays from the auxiliary lamp through the lens 13.

From the foregoing description the use 01 my improved construction will be readily understood. Assuming that the main headlight is burning, the reflecting tube extensions are moved outwardly to the position shown in Fig. 1 and the auxiliary lamps 28 are not lighted, since the rays from the mam headlight passing through the reflecting passing through the lens 13, the slide 14: is

adjusted so that its transparent colored disk 17 occupies a position before the lens 13. When this is done the thumb nut 16 is tightened whereby the slide is securely held in the adjusted position. In case it is desired to shut off all. the light from the lens 13, the shutter slide 18 is adjusted to a position in front of the lens 13 thus cutting off all the lightwhether the main or auxiliary light is employed. 7

Havingthus described my invention, what I claim is:

1. A combined locomotive head and signal. light, comprising in combination a main headligl'it casing, a reflector therein, auxiliary casings attached to the opposite sides of the main casing, reflecting tubes extending from openings formed in the reflector, outwardly into the auxiliary casings, each of the latter being provided with an auxiliary lamp and also a lens'located in front of the tube, each reflecting tube being provided with a movable extension, substantially as described.

2. A locomotive head and signal light comprising a main casing, auxiliary casings attached to the main casing, a reflector located in the main casing and provided with lateral openings, reflecting tubes provided with movable extensions said tubes leading from the lateral openings and projecting into the auxiliary casings, each of which is provided with a lens in the path of the rays of light from the tubes, a curved slidelocated in each auxiliary casing and having a colored disk which when moved in the rear of the lens will change the color of the light passing therethrough, and a shutter slide located in each auxiliary casing and in the rear of the slide having the colored disk, the shutter slides being curved and adjustable to cut off the light from the lenses of the auxiliary casings, substantially as described.

3. A locomotive head and signal light comprising a main casing, auxiliary casings attached to the main casing, a reflector, reflecting tubes extending from the reflector into the auxiliary casings, one extremity of each tube being connected with the reflector which is provided with an opening to allow the reflected light rays to pass through the tubes, a lens located in each auxiliary casing, in front of the outer extremity of the reflecting tube, and an auxiliary light carried by each auxiliary casing and located in the rear of the reflecting tubes, substantially as described.

4. A locomotive head and signal light comprising a main casing, auxiliary side casings, a main reflector, reflecting tubes leading therefrom into the side casings, each of the latter being provided with a lens located in front of a reflecting tube, an auxiliary lamp located in the rear of each reflecting tube, each of the latter being provided with a movable extension adapted to be moved inwardly when the auxiliary lamps are lighted, substantially as described.

5. A locomotive head and signal light comprising a main casin side auxiliary casings, a main reflector having openings to allow the rays of light to pass into the auxiliary casings, and an auxiliary lamp located in each side casing and so situated that the rays of light may pass through a lens with which the auxiliary casing is provided, substantially as described.

6. A locomotive head and signal light comprising a main casing, a reflector located therein provided with lateral openings, the main casing being provided with auxiliary casings located on opposite sides thereof and communicating with the main casing, the rays of light from the openings in the reflector entering the auxiliary casings, each of which is provided with a lens through which said rays pass, the bottom of each auxiliary casing being provided with a socket, and a lamp whose body portion is located in said socket, the lamp being so located that its rays may pass through the lens of the casing, substantially as described.

7. A locomotive head and signal light comprising a main casing, and side casings, each side casing having a lens, and a lamp located in each side casing and so arranged that its rays may pass through the lens of the casing, substantially as described.

8. A locomotive head and signal light including a main casing, side auxiliary casings provided with lenses, each auxiliary casing having an opening in its bottom surrounded by a screw sleeve, a screw cap applied to said sleeve, the cap and sleeve projecting below the bottom of the casing, a lamp supported by said cap, and a spring attached to the bottom of the casing and engaging the upper portion of the body of the lamp, substantially as described.

In testimony whereof I aflix my signature in presence of two witnesses.

DAVID BURNFIELD.

' Witnesses DENA NELSON, J. MASON MAUGHUM. 

